Treatment of "Gamekeeper's Thumb" by reconstruction of the ulnar collateral ligament.

This study examines the treatment of 22 thumbs with symptomatic laxity of the ulnar collateral ligament of the metacarpophalangeal joint by ligament reconstruction 1 week to 10 years after injury. The existing ligament remnants were repaired in 13 thumbs and were re-attached to bone, using a bone anchor, in seven cases. Two ligaments were reconstructed using the extensor pollicis brevis tendon. Patients were reviewed at a mean of 16 months. Functional stability was regained in all patients, but two thumbs had ongoing pain in the metacarpophalangeal joint. All but one patient returned to their original work and recreational pastimes. This study suggests that ligament reconstruction for chronic laxity of the ulnar collateral ligament is likely to achieve painless stability of the metacarpophalangeal joint even when reconstruction is delayed. This makes joint fusion unnecessary in most instances.